Top Type 0.5 ton -60 ton Excavator Attacchments Hydraulic Electromagnetic Circuit Breaker For Mini Excavator

Main Advantages of DOPRO Hydraulic Breaker:

1.Easy to locate and control;
2.More conducive to excavate;
3.Weight lighter, the lower risk of broken drill rode
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Excellent performance with high durability. The company has been developed to meet the high standards of the current market. The demand for high durability and low maintenance costs on hydraulic equipment are combined in the total design of our attachments.
Cylinder u0026amp; valves: prevents scuffing with precision finishing treatment
Piston: every piston tolerance machined perfectly according to each cylinder
Chisel: 42CrMo, exceptional performance and reliability
Seal kit: original NOK

Contral Valve
1.Special design
2.The tolerance between valve and valve sleeve is 0.02-0.03mm(20T)
Through bolt
1.42 CrMo to ensure perpendicularity
2.Vacuum heat treatment in order to expand service life, avoid broken

Piston
1. Special material:durable and longer service life.(20CrNiMoA)
2. For larger model, we use special technology, avoid crack. It will be as good as new after six months if you opearte correctly.
3.Vacuum heat treatment, we control the temperature and time of annealing furance by computer and workers. To ensure durable performance and perfect quality.
4.After heat treatment, we use subzero treatment in order to reduce the deformation and not easy scratched ( below zero 130℃).
5.The piston's precision is 0.005mm and concentricity is 0.005-0.006mm. It ensures beating force.
6.The distance between cylinder and piston:
20T 0.05-0.06mm
30-40T 0.06-0.065mm
40T 0.065-0.07mm

DOPRO is a professional manufacturer of Hydraulic Breaker for more than 15 years, we are leading manufacturer in china domestic market for breaker spare part and whole breaker production ,meanwhile we get more production line for excavator attachments .

Until now ,we get three factory and one export company ,The factory size more than 7,000 square meters. only from last two years we officially developing into overseas markets. and we have successfully expanded our business to the world countries. from Aisa to Europe , USA, Latin America ,Oceania...

Our related series products include Hydraulic Breaker, Quick Hitch Coupler ,Hydraulic Compactor , Hydraulic Grapple ,Hydraulic Crusher ,Thumb Bucket ,Wood Grapple ,Pile Hammer,Hydraulic Vibrating Ripper,Hydraulic Shear, excavator parts, etc ,We have all kinds of production equipment.

DOPRO , ONE STOP SOLUTION FOR EXCAVATOR ATTACHMENT !